Portable radio terminal with infrared communication function and communication method for portable radio terminal

Abstract

A portable radio terminal with an infrared communication function prevents consumption power from increasing when a radio communication function and an infrared communication function are used at a same time. A radio communication function section is judged whether in radio communication or not, and a driving current of an light emitting element in an infrared communication function section. The driving current of the light emitting element for an infrared communication is controlled in accordance with an operation of the radio communication function section, therefore, it is possible to loosen a condition for enabling infrared communication. As to restrictions for outputs from light emitting elements, a driving current of a light emitting element is controlled or plural light emitting elements having respective outputs are selectively driven.

1. A communication method for a portable radio terminal with an infrared communication function comprising:
 a radio communication function section; 
 an infrared communication function section; and 
 an information processing section operable to detect a function state of said radio communication function section and operable to control an infrared output from said infrared communication function section, 
 wherein said function state indicates whether there is radio output from said radio communication function section, and 
 wherein the infrared output from said infrared communication function section is restricted when the information processing section detects a function state indicating there is radio output from said radio communication function section. 
 
   
   
     2. A portable radio terminal with an infrared communication function comprising:
 a radio communication function section; 
 an infrared communication function section; and 
 an information processing section operable to detect a function state of said radio communication function section and operable to control an infrared output from said infrared communication function section, 
 wherein said function state indicates whether there is radio output from said radio communication function section, and 
 wherein the infrared output from said infrared communication function section is not restricted when the information processing section detects a function state indicating there is no radio output from said radio communication function section. 
 
   
   
     3. The portable radio terminal with an infrared communication function according to  claim 2 , wherein the infrared output from said infrared communication function section is restricted when the information processing section detects a function state indicating there is radio output from said radio communication function section. 
   
   
     4. A portable radio terminal with an infrared communication function comprising:
 a radio communication function section; 
 an infrared communication function section; and 
 an information processing section operable to detect a function state of said radio communication function section and operable to control an infrared output from said infrared communication function section, 
 wherein said function state indicates whether there is radio output from said radio communication function section, and 
 wherein said infrared output is controlled so as to restrict a communicable distance of said infrared communication function when said function state indicates radio output from said radio communication function section. 
 
   
   
     5. A communication method for a portable radio terminal with an infrared communication function, said communication method comprising:
 judging whether a radio communication function section is in radio communication or not; and 
 selecting an infrared communication function section among a plurality of infrared communication function sections, 
 wherein a user is notified that a communicable distance of said infrared communication function is restricted when the radio communication function section is in radio communication. 
 
   
   
     6. The communication method for a portable radio terminal with an infrared communication function according to  claim 5 , wherein said infrared communication function section is selected among said plurality of infrared communication function sections in accordance with a transmission power value of said radio communication function section. 
   
   
     7. The communication method for a portable radio terminal with an infrared communication function according to  claim 5 , wherein a driving current of a light emitting element is not restricted when the radio communication function is not in radio communication. 
   
   
     8. The communication method for a portable radio terminal with an infrared communication function according to  claim 7 , wherein the driving current of the light emitting element is restricted when the radio communication function is in radio communication. 
   
   
     9. The communication method for a portable radio terminal with an infrared communication function according to  claim 5 , wherein a driving current of a light emitting element is restricted when the radio communication function is in radio communication. 
   
   
     10. A communication method for a portable radio terminal with an infrared communication function, said communication method comprising:
 judging whether a radio communication function section is in radio communication or not; and 
 controlling a driving current of a light emitting element in an infrared communication function section; 
 wherein a user is notified that a communicable distance of said infrared communication function is restricted when the radio communication function section is in radio communication. 
 
   
   
     11. The communication method for a portable radio terminal with an infrared communication function according to  claim 1 , wherein said driving current of said light emitting element in said infrared communication function section is controlled in accordance with a transmission power value of said radio communication function section. 
   
   
     12. The communication method for a portable radio terminal with an infrared communication function according to  claim 1 , wherein the driving current of the light emitting element is not restricted when the radio communication function is not in radio communication. 
   
   
     13. The communication method for a portable radio terminal with an infrared communication function according to  claim 12 , wherein the driving current of the light emitting element is restricted when the radio communication function is in radio communication. 
   
   
     14. The communication method for a portable radio terminal with an infrared communication function according to  claim 1 , wherein the driving current of the light emitting element is restricted when the radio communication function is in radio communication.